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Katherine F. Garland, Stephanie E. Burnett, Michael E. Day, and Marc W. van Iersel

plant photosynthesis and marketability of the crop ( Franco et al., 2006 ). In some cases, stomatal conductance ( g S ) may not fully recover after periods of sustained or periodic water stress or previously stressed plants may acclimate through

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D. Joseph Eakes, Robert D. Wright, and John R. Seiler

Abbreviations: CA, leaf chamber CO 2 concentration; CI, leaf internal CO 2 concentration; E, transpiration; g L , leaf conductance; MSC, moisture stress conditioning; Pn, net photosynthesis; r m , mesophyll resistance to CO 2 ; SI, stomatal

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Olivia Sanchez, Stephanie E. Burnett, and Bryan J. Peterson

evaluate environmental conditions in each of the three systems and investigate the possible role of cutting photosynthesis in differential rooting responses. Materials and Methods Plant material. On 12 July 2018, 150 semihardwood terminal stem cuttings were

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Amir Rezazadeh, Richard L. Harkess, and Guihong Bi

effects such as reduced net photosynthesis and yield or leaf abscission ( Durner, 2013 ; Vu et al., 2001 ). The effect of water stress on the decrease in photosynthetic activity has been primarily attributed to stomata closure and reduced transpiration

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Jinhong Yuan, Man Xu, Wei Duan, Peige Fan, and Shaohua Li

Water is a limited resource worldwide. Water deficits often result in a decrease of P n , which can influence vegetative growth, yield, and fruit quality in fruit trees. The response of photosynthesis to water stress is correlated with stress

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Hardeep Singh, Megha R. Poudel, Bruce Dunn, Charles Fontanier, and Gopal Kakani

In the terrestrial ecosystem, carbon is added to plants through fixing of atmospheric CO 2 by the process of photosynthesis ( A n ), which can be defined as an oxidation-reduction reaction activated through light absorbed by chlorophyll, resulting

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J.W. Moon Jr., D.M. Kopec, E. Fallahi, C.F. Macino, D.C. Slack, and K. Jordan

Photosynthesis was reduced by 85% to 90% in perennial ryegrass (Lolium perenne L. cv. Derby) following a one-day chilling exposure at 8C day (450 μmol·s-1·m-2 PPF) and 5C night. Seven days of recovery at 22/17C day/night were required for full recovery of photosynthesis. More than 75% of the limitation in photosynthesis following chilling was due to non-stomatal factors, and reduced initial slopes of CO2 assimilation vs. intercellular CO, indicate that photosynthetic capacity was reduced for 5 days following chilling. Carbon dioxide assimilation at saturating intercellular CO2 (>500 μmol·mol-l) was also reduced by chilling, indicating again that stomatal limitations were a minor contributor to the photosynthetic reduction observed under ambient CO2.

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Mokhles A. Elsysy, Andrew Hubbard, and Todd C. Einhorn

calculates photosynthesis rate (i.e., flux, µmol·m −2 ·s −1 ) from direct measures (via two IRGAs) of the CO 2 concentration entering and exiting the leaf cuvette, relative to the leaf area in the cuvette (4.5 cm 2 ). CO 2 concentration was controlled (390

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Vania Lanari, Oriana Silvestroni, Alberto Palliotti, Alan Green, and Paolo Sabbatini

Not much is known about the influence of leaf position on photosynthesis in water-stressed leaves. We do know that stomatal control of water loss is an early plant response to water deficit under field conditions ( Chaves, 1991 ; Cornic and

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Dalong Zhang, Yuping Liu, Yang Li, Lijie Qin, Jun Li, and Fei Xu

therefore effectively enhance plant photosynthesis and growth ( Lu et al., 2015 ; Zhang et al., 2015 , 2017 , 2018 ). It is generally considered that the movement of water through the soil–plant–atmosphere continuum is driven by a gradient in water